The corrugated beam barrier is a common product, but do you know the international specification of it? The following is an example of an international specification for the production of the corrugated beam barrier.
National standards for highway corrugated barrier should be JT/ t281-2007 corrugated beam barrier professional specifications for quality inspection. The part of the guardrail plate with corrugated beam should be specified with a thickness not exceeding 4mm, and the thickness under the column should be different. We can have a thickness difference of 0.25mm, and the steel tube with a thickness of 4.5mm should be specified with a thickness not less than 4.25mm. The product quotation of highway guardrail board of national standard is as follows: the total cross-section of the national standard (gr-a-4e type) is 130 yuan/meter; The state standard steel bar (gr-a-2e type) is quoted at 183 yuan per meter. (note: national standard products can be inspected by the buyer).